9919061 has 2 divisors, whose sum is σ = 9919062. Its totient is φ = 9919060.

The previous prime is 9919057. The next prime is 9919067. The reversal of 9919061 is 1609199.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5428900 + 4490161 = 2330^2 + 2119^2 .

It is an emirp because it is prime and its reverse (1609199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9919061 - 2² = 9919057 is a prime.

It is a super-2 number, since 2×9919061² = 196775542243442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9919067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4959530 + 4959531.

It is an arithmetic number, because the mean of its divisors is an integer number (4959531).

Almost surely, 2^9919061 is an apocalyptic number.

It is an amenable number.

9919061 is a deficient number, since it is larger than the sum of its proper divisors (1).

9919061 is an equidigital number, since it uses as much as digits as its factorization.

9919061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 9919061 is about 3149.4540796779. The cubic root of 9919061 is about 214.8606343971.

The spelling of 9919061 in words is "nine million, nine hundred nineteen thousand, sixty-one".